gfx: improve Sprite module pipeline management

* No longer abuse event arguments for pipeline information.
* Store pipeline information as entities/components.

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

examples/sprite/main.zig

@@ -10,6 +10,7 @@ const Game = @import("Game.zig");
 pub const modules = .{
     mach.Engine,
     mach.gfx.Sprite,
+    mach.gfx.SpritePipeline,
     Game,
 };